Add new recipe for strings from any wool block

[M4urus]

It would make mods such as Animalia(creating saddles require strings) or any bow/crossbow mod integrate much more naturally to MTG, since cotton is very hard to find, or impossible depending on the biome.

Also this recipe makes a lot of sense IMO.

[M4urus]

Sorry, this is my first contrib. I don't get the issue with the white space, could somebody help me with that? I've seen recent PRs with white spaces added and there was no warning in luacheck.

[appgurueu]

I'm not sure whether we can accept this. I'm afraid we might have to view this as a feature and reject it accordingly - it changes game mechanics, even if only slightly.

If this is unanimously considered a good idea, I'd be open to it however.

[SmallJoker]

This change makes sense from a real-world standpoint. Spinning wool is a common practice. Optimally we'd require a tool to wear out (there's currently nothing that would match in MTG), and time if we wanted to follow reality. Strings might still be easier to obtain by farming cotton - depending on the automation mods that are available.

I wouldn't be opposed to such change. Perhaps adding a loss (3 strings instead of 4) could artificially make cotton more attractive - or mods that add appropriate tools including a wool spinning wheel for lossless conversion.